An Overview of Echinoderms, Birds and Mammals (1766 words, 12 pages)
Echinoderms, Birds, and MammalsChapters 34, 39, 40 I. Diversity- Echinodermata ("Spiny-Skin") A. Characteristics 1. undergo metamorphosis from free- swimming larva to bottom dwelling adult. five radii(pentaradial symmetry) 2. endoskeleton, calcium plates, include protruding spines 3. water- vascular system (water- filled canals) 4. tube feet, aid in movement, feeding, respiration, and ...
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